022ca2fc7f
POSIX AIO is great, but it lacks vectored I/O functions. This commit fixes that shortcoming by adding aio_writev and aio_readv. They aren't part of the standard, but they're an obvious extension. They work just like their synchronous equivalents pwritev and preadv. It isn't yet possible to use vectored aiocbs with lio_listio, but that could be added in the future. Reviewed by: jhb, kib, bcr Relnotes: yes Differential Revision: https://reviews.freebsd.org/D27743
128 lines
5.1 KiB
C
128 lines
5.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1998-1999 Andrew Gallatin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _COMPAT_FREEBSD32_FREEBSD32_UTIL_H_
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#define _COMPAT_FREEBSD32_FREEBSD32_UTIL_H_
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#include <sys/cdefs.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/uio.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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struct freebsd32_ps_strings {
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u_int32_t ps_argvstr; /* first of 0 or more argument strings */
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int ps_nargvstr; /* the number of argument strings */
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u_int32_t ps_envstr; /* first of 0 or more environment strings */
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int ps_nenvstr; /* the number of environment strings */
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};
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#if defined(__amd64__)
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#include <compat/ia32/ia32_util.h>
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#endif
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#define FREEBSD32_PS_STRINGS \
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(FREEBSD32_USRSTACK - sizeof(struct freebsd32_ps_strings))
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extern struct sysent freebsd32_sysent[];
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#define SYSCALL32_MODULE(name, offset, new_sysent, evh, arg) \
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static struct syscall_module_data name##_syscall32_mod = { \
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evh, arg, offset, new_sysent, { 0, NULL } \
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}; \
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\
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static moduledata_t name##32_mod = { \
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"sys32/" #name, \
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syscall32_module_handler, \
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&name##_syscall32_mod \
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}; \
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DECLARE_MODULE(name##32, name##32_mod, SI_SUB_SYSCALLS, SI_ORDER_MIDDLE)
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#define SYSCALL32_MODULE_HELPER(syscallname) \
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static int syscallname##_syscall32 = FREEBSD32_SYS_##syscallname; \
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static struct sysent syscallname##_sysent32 = { \
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(sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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(sy_call_t *)& syscallname \
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}; \
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SYSCALL32_MODULE(syscallname, \
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& syscallname##_syscall32, & syscallname##_sysent32,\
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NULL, NULL);
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#define SYSCALL32_INIT_HELPER_F(syscallname, flags) { \
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.new_sysent = { \
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.sy_narg = (sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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.sy_call = (sy_call_t *)& syscallname, \
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.sy_flags = (flags) \
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}, \
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.syscall_no = FREEBSD32_SYS_##syscallname \
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}
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#define SYSCALL32_INIT_HELPER_COMPAT_F(syscallname, flags) { \
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.new_sysent = { \
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.sy_narg = (sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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.sy_call = (sy_call_t *)& sys_ ## syscallname, \
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.sy_flags = (flags) \
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}, \
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.syscall_no = FREEBSD32_SYS_##syscallname \
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}
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#define SYSCALL32_INIT_HELPER(syscallname) \
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SYSCALL32_INIT_HELPER_F(syscallname, 0)
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#define SYSCALL32_INIT_HELPER_COMPAT(syscallname) \
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SYSCALL32_INIT_HELPER_COMPAT_F(syscallname, 0)
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int syscall32_module_handler(struct module *mod, int what, void *arg);
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int syscall32_helper_register(struct syscall_helper_data *sd, int flags);
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int syscall32_helper_unregister(struct syscall_helper_data *sd);
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struct iovec32;
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struct rusage32;
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int freebsd32_copyout_strings(struct image_params *imgp,
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uintptr_t *stack_base);
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int freebsd32_copyiniov(struct iovec32 *iovp, u_int iovcnt,
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struct iovec **iov, int error);
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int freebsd32_copyinuio(struct iovec32 *iovp, u_int iovcnt,
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struct uio **uiop);
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void freebsd32_rusage_out(const struct rusage *s, struct rusage32 *s32);
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struct image_args;
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int freebsd32_exec_copyin_args(struct image_args *args, const char *fname,
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enum uio_seg segflg, u_int32_t *argv, u_int32_t *envv);
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#endif /* !_COMPAT_FREEBSD32_FREEBSD32_UTIL_H_ */
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